// Copyright 2022 Jeroen van Nugteren

// Permission is hereby granted, free of charge, to any person obtaining a copy of this software
// and associated documentation files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:

// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
// OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

#ifndef DM_DF_INTERSECT_HH
#define DM_DF_INTERSECT_HH

#include <armadillo> 
#include <cassert>
#include <memory>
#include <json/json.h>

#include "distfun.hh"

// code specific to Rat
namespace rat{namespace dm{

	// shared pointer definition
	typedef std::shared_ptr<class DFIntersect> ShDFIntersectPr;

	// circle distance function for distmesh
	class DFIntersect: public DistFun{
		// properties
		private:
			// distance functions
			std::map<arma::uword,ShDistFunPr> df_;
			
		// methods
		public:
			// constructcor
			DFIntersect();
			DFIntersect(const ShDistFunPr &dfa, const ShDistFunPr &dfb);
			explicit DFIntersect(const std::list<ShDistFunPr> &dflist);

			// factory
			static ShDFIntersectPr create();
			static ShDFIntersectPr create(const ShDistFunPr &dfa, const ShDistFunPr &dfb);
			static ShDFIntersectPr create(const std::list<ShDistFunPr>&dflist);

			// access to stored distance functions
			void add(const ShDistFunPr& df);
			arma::uword add_df(const ShDistFunPr& df);
			const ShDistFunPr& get_df(const arma::uword index) const;
			bool delete_df(const arma::uword index);
			arma::uword num_df() const;
			void reindex() override;
			
			// perimeter function
			virtual ShPerimeterPr create_perimeter(const fltp delem) const override;
			
			// get bounding box
			virtual arma::Mat<fltp>::fixed<2,2> get_bounding() const override;
			
			// fixed points
			virtual arma::Mat<fltp> get_fixed(const fltp abstol) const override;
			
			// distance function
			virtual arma::Col<fltp> calc_distance(const arma::Mat<fltp> &p) const override;

			// validity check
			virtual bool is_valid(const bool enable_throws)const override;

			// serialization
			static std::string get_type(); 
			void serialize(
				Json::Value &js, 
				cmn::SList &list) const override;
			void deserialize(
				const Json::Value &js, cmn::DSList &list, 
				const cmn::NodeFactoryMap &factory_list, 
				const boost::filesystem::path &pth) override;
	};

}}

#endif
